Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17615
Title: Serrated chip formation and their adiabatic analysis by using the constitutive model of titanium alloy in high speed cutting
Authors: Wu, H
To, S 
Keywords: Adiabatic analysis
Constitutive equation
Finite element modeling
High speed cutting
Serrated chip
Issue Date: 2015
Publisher: Elsevier Ltd
Source: Journal of alloys and compounds, 2015, v. 629, p. 368-373 How to cite?
Journal: Journal of Alloys and Compounds 
Abstract: To investigate the cutting mechanism of a new emerging high temperature and high strength titanium alloy named TC21 (Ti-6Al-2Sn-2Zr-3Mo-1Cr-2Nb) using the finite element method (FEM), a modified high temperature split Hopkinson pressure bar (SHPB) test system was employed to obtain the stress-strain curves of TC21 alloy under different temperatures and strain rates. The Johnson-Cook (JC) model was fitted using the data of SHPB test and used to describe the material behavior in the high speed cutting simulation of TC21 alloy. The chip formation simulation and experiment proved that the adiabatic effect is the key factor to lead to the serrated chips in the high speed cutting of TC21 alloy. Furthermore, the comparison of chip formation between simulation and experiment under different tool rake angles showed that the serrated chip of TC21 alloy is sensitive to the tool rake angle.
URI: http://hdl.handle.net/10397/17615
ISSN: 0925-8388
DOI: 10.1016/j.jallcom.2014.12.230
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